In the production of square tubes, the billet must be sent to the melting furnace for heating, and the temperature is around 1200 degrees. Transformer manufacturers mainly use radon gas as the natural material. In the whole heating process, the control of the temperature in the furnace is a more critical part. The temperature must be controlled within a rated value range, so as to ensure the production and manufacture of products. The q345d square tube can have a more stable process performance. After the transformer manufacturer heats up, it must be refrigerated according to the method of watering. Since the seamless steel pipe has to be straightened after cooling, the basic prototype of the q345d square pipe can be seen, and all the manufacturing steps are still very complicated.
At this stage, the key q345d square tube production in China is mainly concentrated in Chengdu, Hebei, Shandong and Jiangsu provinces. It is widely used in pneumatic components, trolleys, petrochemicals, power engineering and ships. .
